Robinsonia xanthopoda, Laguerre, 2025

Laguerre, Michel, 2025, New species of Arctiinae east of the Canal Zone, Panama (Lepidoptera, Erebidae, Arctiinae, Arctiini), Faunitaxys 13 (12), pp. 1-17 : 1-3

Robinsonia xanthopoda sp. n.

ZooBank:https://zoobank.org/ 1FF8A590-F528-4E29-BC15-F44BF6B53B11

Holotype, ♂, PANAMA, Panama, LosAltos de Cerro Azul , 14-XI-2023, 700 m, 9.2030° N 79.4150° W, L. & J. Harrison leg., Will be deposited in MNHN.

Paratypes (2 ♂, 4 ♀), same locality as holotype, in MLC.

- 2 ♂, 13-VII-2021, one is dissected Gen. ML3828 (light-blue manuscript label);

- 2 ♀, 13-XII-2021 (dissected ML3882 ) and 23-VII-2021;

- 2 ♀ 14-XI-2023, D. Herbin leg., (one is dissected ML3881 ).

Diagnosis. –An entirely silky white species, with a thin black line on forewing costa and an orange vertex. Legs annealed with black and orange, forecoxae orange in males.

Male ( Fig. 2)

FWL = 14-15 mm. Antennae black, bipectinate. Head with frons and vertex bright orange. Palpi orange. Collar white. Tegulae, patagia and thorax white. Abdomen above covered with dirty white hairs. Forewings entirely silky white with a thin black border along costa. In some specimens a trace of grey shading on the veins terminus below apex. Hindwings entirely silky white.Below forecoxae bright-orange. Fore- and mid-legs with tarsi dark grey, fore- and midfemurs darkgrey annealed with orange, hind-legs dirty white. Abdomen below dirty white. Underside of wings similar to upperside, the forewing costa border wider and the grey shading on the veins below apex more pronounced.

Genitalia male ( Fig. 3)

Uncus moderately wide, enlarged at base and then flattened and curved downward. Valvae not reaching the tip of uncus, wider at base then spoon like in the last half with a rounded tip. A translucent and rounded sacculus covered with thin hairs. Juxta conical. Vinculum flat slightly concave without saccus. Aedeagus long, narrow and cylindrical with a pronounced caecum penis. Vesica smooth, bilobed: one short lobe and one very long tube, narrow and cylindrical with a short diverticule near base bearing four teeth at the extremity.

Female ( Fig. 4).

FWL = 16-17 mm. Similar to male, slightly larger, with forewings less elongated. Head with frons and vertex yellow. Palpi beige. Forecoxae light yellow. The black costa line is thinner, especially below. The short dark streaks on the forewing preapical termen below are absent.The legs are less contrasted.

Genitalia female ( Fig. 5)

Papillae anales subrectangular, slightly concave in middle. Apophyses anteriores long and thin, apophyses posteriores shorter and wider. Antrum straight, ductus bursae as a flat ribbon, folded in the middle. Bursa copulatrix spherical and wrinkled with two symmetrical signa like a rounded corrugated depression. The bursa copulatrix is linked to an oval accessory bursa by the way of a sclerotized cylindrical tube bent at 90° of the ductus bursae and turned on the right in ventral view.

Etymology. – The name xanthopoda derives from the Ancient Greek xanthos (ξανθος) which means yellow and poda (ποδα) which means feet or legs, by reference to the legs characteristic color.

Early stages. – Unknown.

Distribution. – Presently only known from Panama Eastof the Canal Zone at low- to mid-altitudes.